Van der Ende Groep · Aartsdijkweg 23, 2676 LE, Maasdijk · Tel. 0174 515050
IBAN NL71 RABO 0340341610 · KvK Den Haag 27230471 · Btw-nummer NL8000.78.378.B01 · [email protected] · www.vanderendegroep.nl
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The EC fan has a drive with internal control, which needs to be programmed before the first use. The
EC fan requires that power supply is permanently present. This fan can be controlled with a Modbus
signal or 0-10V control. A rotational speed of 1250rpm is enough to achieve a ventilation capacity of
5200 m
3
/h. The recommended minimum speed is 830 rpm.
Instruction can be found in the EC manual on our website www.vanderendegroep.nl
6.2
Valve actuator
The drive (Figure 23) of the valves must be controlled by the climate computer. A 3-core flexible
cable exits the valve actuator. Core number 1 is neutral, and cores number 2 and 3 respectively open
and close the linear gear-rack drive. 24 V AC 50/60 Hz. 24 V DC.
Figure 23 Valve actuator
Figure 24 Valve actuator connection diagram
6.3
Connection diagram valve position sensor
The climate computer can readout the current position of the valves through connection 2 of the
valve position sensor. The valve sensor axle (right in Figure 25), can be rotated 56 degrees by the
valve actuator. This angle is converted into nearly a full rotation of a potentiometer (1 k
Ω
) through a
gear transmission. Because the voltage over connection 2 is dependent on a variable resistance, the
computer is able to determine by what angle the valve was originally rotated.
Figure 25 Valve position sensor
Figure 26 Schematic valve position sensor
